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Plastic wood material and preparation method thereof

A profile and plastic-wood technology, which is applied in the field of plastic-wood profiles and the use of crop straws and waste plastics to prepare the profiles, can solve the problems of environmental pollution of waste plastics, difficulty in zero-pollution recycling, and large straw reserves, and achieves high economic benefits. , The effect of reducing production costs and reducing molding process time

Inactive Publication Date: 2013-01-09
GEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of large reserves of existing crop straws, the difficulty of zero-pollution recycling, and the huge pollution caused by waste plastics to the environment, and to provide a method that uses crop straws and recycled waste plastics to produce a product that looks like wood and has better performance. Wood-plastic profile and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Raw material components by weight

[0030] 29 parts of high density polyethylene (HDPE), 43 parts of cotton stalk fiber powder, 3 parts of vinyl tris(methoxyethoxy) silane, 6 parts of PE grafted maleic anhydride, 15 parts of ammonium polyphosphate, stearic acid 2 parts zinc, 0.8 parts antioxidant 1010 and 1.2 parts colorant.

[0031] Cotton stalk fiber powder and vinyl tris(methoxyethoxy) silane, HDPE, PE grafted maleic anhydride, ammonium polyphosphate, zinc stearate, antioxidant 1010 and colorant were added to high-speed mixing. Then, the mixed material was extruded in a twin-screw extruder to make pellets, the screw melting temperature was 190°C, and the rotational speed was 180 rpm. After the extruded material was cooled, it was pelletized by a pelletizer to obtain pellets.

[0032] Adding the obtained pellets into an extruder for extrusion molding, the plastic-wood profile of the present invention is obtained, and the bending strength of the obtained profile reac...

Embodiment 2

[0034] Raw material components by weight

[0035] 30 parts of polypropylene (PP), 42 parts of wheat straw fiber powder, 4 parts of vinyltrimethoxysilane, 6 parts of PP grafted maleic anhydride, 14 parts of ammonium polyphosphate, 2 parts of zinc stearate, 0.8 parts of antioxidant agent 1010 and 1.2 parts colorant.

[0036] Add the wheat straw fiber powder, vinyltrimethoxysilane, PP, PP grafted maleic anhydride, ammonium polyphosphate, zinc stearate, antioxidant 1010 and colorant to the high-speed mixer to mix evenly, then The mixed material is reacted and extruded in a twin-screw extruder to make pellets. The screw melting temperature is 200°C and the rotation speed is 180 rpm. After the extruded material is cooled, it is pelletized by a pelletizer to obtain pellets.

[0037] Adding the obtained pellets into an extruder for extrusion molding, the plastic-wood profile of the present invention is obtained, and the bending strength of the obtained profile reaches 51 MPa after te...

Embodiment 3

[0039] After sorting, crushing, cleaning and drying the recycled waste plastics, add them to a high-speed mixer and mix thoroughly for use. The mixing time is controlled within 5-10 minutes;

[0040] Dry and crush the crop straw into 50-100 mesh crop straw fiber powder;

[0041] In parts by weight, take 32 parts of waste plastics, 42 parts of crop straw, 3 parts of hexamethyldisiloxane, 6 parts of PP grafted maleic anhydride, 13 parts of triphenyl phosphate, stearic acid 2 parts sodium, 0.5 part antioxidant 264 and 1.5 part colorant titanium dioxide.

[0042] The above components are fully mixed in a high-speed mixer, and the mixing time is controlled within 10 to 20 minutes;

[0043] The mixed material after the first step is melt-blended with a twin-screw extruder, extruded and pelletized, the processing temperature is 180-220 ° C, and the rotating speed is 170-190 rpm;

[0044] The pellets obtained above are then added to an extruder for extrusion molding.

[0045] In th...

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Abstract

The invention relates to a composite material and particularly relates to a plastic wood material and a method for preparing the material by crop straw and waste plastic. The plastic wood material disclosed by the invention is prepared from the following components by weight: 20-36% of waste plastics, 25-70% of crop straws, 5-44% of fire retardants, 1-10% of bulking agent, and 0.1-3% of lubricating agent, 0.5-3% of plasticizer, 0.01-1% of antioxidant and 0.5-3% of coloring agent. The performance of According to the plastic wood material disclosed by the invention, the performance is more excellent than that of the wood; the crop straw and the waste plastic are utilized for producing the plastic wood material, and the harmless resource utilization of the crop straw and the waste plastic is fully achieved, and the material has the advantages of being environment-friendly, economical and wide in material supply.

Description

technical field [0001] The invention relates to a composite material, in particular to a plastic-wood profile and a method for preparing the profile by using crop straw and waste plastics. Background technique [0002] Wood-plastic composite material is a new type of environmentally friendly composite material. It is compounded by various waste natural wood fibers and plastics, and added with special additives. It is a new type of environmentally friendly composite material that is similar to wood and better than wood. . This material has the advantages of good dimensional stability, high specific strength, and can be recycled repeatedly, and has been widely used in indoor and outdoor construction, transportation, packaging and other fields. [0003] my country is a big agricultural country, and the annual output of crop straw is as high as billions of tons, which is a huge renewable resource. Using crop straw to make environmentally friendly plastic-wood profiles is the te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08L23/12C08L27/06C08L25/06C08L55/02C08L69/00B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 程青民黄旭江张翔
Owner GEM CO LTD
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